Quantum Computing, page-61

Moosey - I think the only way we are going to resolve this is by asking SLX and/or SQC. You are correct in the LIS only separates one isotope at a time however this leaves two ways to produce ZSSi. The first way would be to simply extract the 28Si and keep it - this would mean 28Si was the SLX product and would have the improved conductivity that you assert. The other way is to remove the ²⁹Si and throw it away leaving ²⁸Si and ³⁰Si this would be ZSSi but MAY NOT have the same improved conductivity you assert to be present in the SLX product - that all I querying.

The problem is that all the SQC and SLX literature I have seen leave the isotope to be extracted open but would indicate the second method (i.e removes the ²⁹Si). Also as we are both aware the LIS works more effectively on low assay material (that's why it's suitable for the PLEF tails). Since the amount of ²⁹Si in natural Si is 4.67% it would suggest that removal of the ²⁹Si is more effective than removal of ²⁸Si which is at 92.23% so to me it would suggest that they remove the 29Si leaving 3.1% ³⁰Si in the material. This still leave the valid question of does the ²⁸Si/³⁰Si present x10 improvement in conductivity? - it's NOT "red herring" - I suggest you don't know either but you are nevertheless claiming this benefit - unfortunately wild over optimism on SLX matters is one of your traits If this benefit is NOT present then SLX is not in the general semi-conductor market but only in ZSSi for Quantum computing (i.e. a LOT smaller)